Thread: call methods across classes

Code:

class A
{
public:
     void foo()
     {

     }
};

class B
{
public:
     void bar( A &a_inst )
     {
        a_inst.foo();
     }
};

/* ... */

int main( void ) {
  A a;
  B b;

  b.bar( a );

  return 0;
}

But foo has to be a public function unless you want to declare B as a friend class within A:

Code:

class A {
friend class B;

private:
  void foo() {
    std::cout<< "A::foo() method called\n";
  }

public:

};

class B
{
private:


public:
  void bar( A &a_inst ) {
    a_inst.foo();
  }
};

/* ... */

int main( void ) {
  A a;
  B b;

  b.bar( a );

  return 0;
}